"If we worked on the assumption that what is currently regarded as impossible is really impossible, we should never have made any progress."

"It is not necessary to be a genius to be an inventor."

"The machine had scarcely cleared the ground when it began to turn up, and the next instant it darted into the ground."

"The machine is capable of carrying a passenger."

"The fact that the machine has not failed in any material part is a source of great satisfaction."